George w



UNITED STAT-Es PATENT OFFICE.

eEOReE'w. WARNER, OF FREEFORT, ILLINOIS, AssIeNOR 'ro rrI-IEl WARNERMANUFACTURINGr COMPANY, OF SAME PLACE.

DAIVlPER.

SPECIFICATION forming part of Letters Patent No. 452,740, dated May 19,1891. Application tiled October 10, 1890. Serial N o. r367,658. (Nomodel.)

To a/ZZ whom t may concern:

Be it known that I, GEORGE IV. IVARNER, a resident of Freeport, in thecounty of Stephenson and State of Illinois, have invented certain newand useful Improvements in' Danipers; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to whioh'it pertains to Iomake and use the same.

My invention is in dampers having' springwire handles whosev detachmentfrom the plates is resisted by the elast-ic force of the wire which isformed into a spring within the I5 line of the dampers margin. r

In the accompanying drawings, Figure l is a plan of the complete damper.Fig. 2 is a section on t-he line 2 2, Fig. 1.

In the figures, A is the damper-blade, havzo ing a central Opening B andat one side the integrally-formed gudgeon C. Diametrically opposite thegudgeon is the usual handleshank bearing, formed by depressing from theopposite faces of the plate two segments D D and cutting away theintervening metal at E. The central aperture is spanned by a bridge F,whose inner face is a plane tangent to the shank when in its normalposition. Upon each side of the line of the bear- 3o ing are shoulders GG', diverging toward the margin and preferably formed by depressing aportion of the plates surface. A steel wire H lies in the bearing, withits inner end recurved beneath the bridge and resting in 011e or theother of the depressions. In either case the bridge prevents therotation of the wire with reference to the plate, and if the wire .be inthe position shown its free end rests against an Offset G in theshoulder 4o G, rendering the withdrawal of the wire from beneath thebridge impossible until the wire end is sprung inward past the offset.The bottom of the depression is out away at K, so that any pointedinstrument may be conveniently inserted for springing the wire. If thispermanent locking is not desired, the wire is rotated one hundred andeighty degrees and sprung into the other depression before beingadvanced beneath the bridge. If the ad- 5o Vance be then made, the freeend of the wire rests against the inclined shoulder GS at its innerlimit, and evidently a strong direct pull upon the handle will withdrawthe wire from beneath the bridge, for the end is forced along' theincline and pressed inward. The 55 wire being withdrawn from itsposition beneath the bridge by any means whatever, the handle is readilydetached by rotating it ninety degrees and slipping it out through theaperture E. 6o

The outer 'end of the wire is brent into a convenient loop L,terminating in an end LS, lying alongside the body of the shank or wire.A short independent coil M encircles both the end and the shank, itsOuter terminal coil being bent closely about the latter and pressingagainst the loop, while its inner end reacts against the edge of thedamper-plate in position to clamp the pipe when the damper is inpractical use.

The middle portion of the bridge is not essential to the operation ofthe devices, but it adds to the strength without adding to the cost.

l. The combination, with the damper-plate having the bearing for thehandle-shank and the shank-retaining bridge, of the shank lying in saidbearing, extending beneath the bridge and having its inner end bent uponitself, 8o said plate being provided with a shoulder lying in the normalpath of t-he reourved end and resisting the withdrawal of the shank.

2. The combination, with the plate having the shank bearing, theshank-retaining 85 bridge, and the shoulders at each side of the line ofthe bearing, of the spring-wire shank lying in the bearing, extendingbeneath the bridge and havingits inner end bent back to rest against oneof the shoulders, the loop 9o formed from the outer end of the shank,and the coil encircling the shank, pressing against the loop andreacting against the edge ofthe plate, substantially as set forth.

In testimony whereof I have signed this specification in the presenceof'two subscribing witnesses.

GEORGE IV. VARNER.

Witnesses:

F. R. BARTLETT, FREDERIC. BARTLETT.

